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嗨，朋友，我正在面临一个问题，同时逐渐在Excel表格中写入内容。当我尝试在现有的Excel表格中添加下一个内容时。我放弃了前一个。任何人都可以帮助我解决这个问题。这里是代码。 我创建了两个java类 1.ReadXLSheet - >读取文件 2.创建 - >增量写入内容。以增量方式在excel表格中写入内容
请仔细研究并解决此问题。
package com.ExcelExample;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Locale;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.read.biff.BiffException;
import jxl.write.Formula;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableSheet;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;
import jxl.DateCell;
public class ReadXLSheet {
private WritableCellFormat times;
public void init(String filePath) {
FileInputStream fs = null;
try {
fs = new FileInputStream(new File(filePath));
contentReading(fs);
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
fs.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
// Returns the Headings used inside the excel sheet
public void getHeadingFromXlsFile(Sheet sheet) {
int columnCount = sheet.getColumns();
for (int i = 0; i < columnCount; i++) {
System.out.println(sheet.getCell(i, 0).getContents());
}
}
public void contentReading(InputStream fileInputStream)
throws WriteException {
WorkbookSettings ws = null;
Workbook workbook = null;
Sheet s = null;
Cell rowData[] = null;
int rowCount = '0';
int columnCount = '0';
DateCell dc = null;
int totalSheet = 0;
try {
ws = new WorkbookSettings();
ws.setLocale(new Locale("en", "EN"));
workbook = Workbook.getWorkbook(fileInputStream, ws);
totalSheet = workbook.getNumberOfSheets();
if (totalSheet > 0) {
System.out.println("Total Sheet Found:" + totalSheet);
for (int j = 0; j < totalSheet; j++) {
System.out.println("Sheet Name:"
+ workbook.getSheet(j).getName());
}
}
s = workbook.getSheet(0);
// Reading Individual Cell
getHeadingFromXlsFile(s);
System.out.println("Total Rows inside Sheet:" + s.getRows());
rowCount = s.getRows();
create c = new create();
c.writeContent(rowCount);
// Total Total No Of Columns in Sheet
System.out.println("Total Column inside Sheet:" + s.getColumns());
columnCount = s.getColumns();
workbook.close();
} catch (IOException e) {
e.printStackTrace();
} catch (BiffException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
try {
ReadXLSheet xlReader = new ReadXLSheet();
xlReader.init("c:/temp/lars.xls");
} catch (Exception e) {
e.printStackTrace();
}
}
}
package com.ExcelExample;
import java.io.File;
import java.io.IOException;
import java.util.Locale;
import jxl.CellView;
import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.format.UnderlineStyle;
import jxl.write.Formula;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;
public class create {
private WritableCellFormat timesBoldUnderline;
private WritableCellFormat times;
private String inputFile;
public void setOutputFile(String inputFile) {
this.inputFile = inputFile;
}
public void write(int rowCount) throws IOException, WriteException {
File file = new File(inputFile);
System.out.println("Inside write 1");
WorkbookSettings wbSettings = new WorkbookSettings();
wbSettings.setLocale(new Locale("en", "EN"));
System.out.println("Inside write 2");
WritableWorkbook workbook = Workbook.createWorkbook(file, wbSettings);
System.out.println("Inside write 3");
workbook.createSheet("Report", 0);
System.out.println("Inside write 4");
WritableSheet excelSheet = workbook.getSheet(0);
System.out.println("Inside write 4");
createLabel(excelSheet);
System.out.println("Inside write 5");
createContent(excelSheet,rowCount);
System.out.println("Inside write 6");
workbook.write();
workbook.close();
}
private void createLabel(WritableSheet sheet)
throws WriteException {
// Lets create a times font
WritableFont times10pt = new WritableFont(WritableFont.TIMES, 10);
// Define the cell format
times = new WritableCellFormat(times10pt);
// Lets automatically wrap the cells
times.setWrap(true);
// Create create a bold font with unterlines
WritableFont times10ptBoldUnderline = new WritableFont(
WritableFont.TIMES, 10, WritableFont.BOLD, false,
UnderlineStyle.SINGLE);
timesBoldUnderline = new WritableCellFormat(times10ptBoldUnderline);
// Lets automatically wrap the cells
timesBoldUnderline.setWrap(true);
CellView cv = new CellView();
cv.setFormat(times);
cv.setFormat(timesBoldUnderline);
cv.setAutosize(true);
// Write a few headers
addCaption(sheet, 0, 0, "Header 1");
addCaption(sheet, 1, 0, "This is another header");
}
private void createContent(WritableSheet sheet, int rowCount) throws WriteException,
RowsExceededException {
// Now a bit of text
for (int i = 1; i < rowCount; i++) {
// First column
addLabel(sheet, 0, i+rowCount, "Adding New text ");
// Second column
addLabel(sheet, 1, i+rowCount, "New Text text");
}
}
private void addCaption(WritableSheet sheet, int column, int row, String s)
throws RowsExceededException, WriteException {
Label label;
label = new Label(column, row, s, timesBoldUnderline);
sheet.addCell(label);
}
private void addNumber(WritableSheet sheet, int column, int row,
Integer integer) throws WriteException, RowsExceededException {
Number number;
number = new Number(column, row, integer, times);
sheet.addCell(number);
}
private void addLabel(WritableSheet sheet, int column, int row, String s)
throws WriteException, RowsExceededException {
Label label;
label = new Label(column, row, s, times);
sheet.addCell(label);
}
public void writeContent(int rowCount) throws WriteException, IOException {
create test = new create();
test.setOutputFile("c:/temp/lars.xls");
test.write(rowCount);
System.out
.println("Please check the result file under c:/temp/lars.xls ");
}
}